There are two examples to show how to use websocket with light-4j framework.

client-to-server

This example to show you how to communicate between client and server. To start the server.

cd ~/networknt
git clone git@github.com:networknt/light-example-4j.git
cd light-example-4j/websocket/client-to-server
mvn clean install exec:exec

Go to your browser and input the url

http://localhost:8080

peer-to-peer

This is a chat server that shows how to use websocket to communicate between two or more browsers.

cd ~/networknt
git clone git@github.com:networknt/light-example-4j.git
cd light-example-4j/websocket/peer-to-peer
mvn clean install exec:exec

Open two browsers on the same computer or two different computers with the url

http://localhost:8080